A car seat back frame provided with a lumbar support adjusting linkage assembly

Abstract

The utility model discloses a kind of automobile seat backrest framework with waist support adjusting connecting rod assembly, it is related to automobile accessory technical field, including backrest frame and adjusting assembly, the top of inside of backrest frame is equipped with inner joint frame, for the adjusting assembly of waist support adjusting connecting rod adjustment is set in the lower end of inner joint frame, and adjusting assembly includes eccentric roller, connecting rod, connecting ring, adjusting rod, hydraulic rod one and long limiting plate, the outside of both ends of eccentric roller is equipped with connecting rod, and the end of connecting rod is connected with connecting ring, the inside of connecting ring is provided with adjusting rod, and the upper end of adjusting rod middle part is equipped with hydraulic rod one. The automobile seat backrest framework with waist support adjusting connecting rod assembly is fixed connection by connecting rod and the rod body of both ends of eccentric roller, connecting rod is driven eccentric roller rotation with the lifting of adjusting rod, eccentric roller rotation adjusts the support convexity of adjusting seat waist support position, long limiting plate makes adjusting rod directional movement under the drive of hydraulic rod one.

Description

Technical Field

[0001] The present utility model relates to the technical field of automotive accessories, in particular to an automotive seat back frame provided with a lumbar support adjustment link assembly. Background Art

[0002] The automotive seat back frame is the core support structure of the seat back, which is mainly welded and assembled from metal pipes, plates or stamping parts, used for fixing the headrest, seat skin and fillers, and connecting the seat base to the vehicle body. The automotive seat back frame provides sitting posture support, maintains the back shape, and ensures riding comfort.

[0003] However, the existing automotive seat back frame has insufficient smoothness during lumbar support adjustment, which easily causes discomfort to the user's waist. Contents of the Utility Model

[0004] The purpose of the present utility model is to provide an automotive seat back frame provided with a lumbar support adjustment link assembly, so as to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: an automotive seat back frame provided with a lumbar support adjustment link assembly, comprising a back frame and an adjustment assembly, wherein an inner connecting frame is installed at the top of the inner side of the back frame, the adjustment assembly for adjusting the lumbar support adjustment link is arranged at the lower end of the inner connecting frame, and the adjustment assembly comprises an eccentric roller, links, connecting rings, an adjustment rod, a first hydraulic rod and a long limit plate, the links are installed on the outer portions of both ends of the eccentric roller, the end portion of each link is connected with a connecting ring, an adjustment rod is arranged inside the connecting ring, a first hydraulic rod is installed at the upper end of the middle portion of the adjustment rod, and a long limit plate is installed at the output end of the first hydraulic rod.

[0006] Further, the links and the connecting rings are arranged in two sets symmetrically about the center line of the eccentric roller, and the connecting rings and the adjustment rod are in sleeved connection.

[0007] Further, a seat frame is installed on the outer side of the lower end of the back frame through a rotating shaft, and a head and neck support is installed at the upper end of the back frame.

[0008] Further, moving blocks are movably installed at both ends of the eccentric roller, and a short limit plate is arranged on the outer side of each moving block.

[0009] Further, the moving blocks and the short limit plates are distributed at intervals, and the lower end of each moving block is installed with a lifting assembly for height adjustment.

[0010] Further, the lifting assembly comprises a lower connecting rod and a second hydraulic rod, and the second hydraulic rod is installed in the middle of the lower end of the lower connecting rod.

[0011] Further, the lower connecting rod and the moving block are in fixed connection, and the lower connecting rod is in a U-shape.

[0012] Furthermore, a crossbar is installed at the fixed end of the hydraulic rod two, and the crossbar is in the shape of a square.

[0013] This utility model provides a car seat back frame with a lumbar support adjustment linkage assembly, which has the following advantages: 1. This utility model uses the connecting rod and the rods at both ends of the eccentric roller as a fixed connection. The connecting rod drives the eccentric roller to rotate as the adjusting rod rises and falls. The rotation of the eccentric roller adjusts the support convexity of the lumbar support position of the seat. The long limiting plate makes the adjusting rod move in a direction under the drive of the hydraulic rod.

[0014] 2. This utility model uses the movable block and the rods at both ends of the eccentric roller as movable connections, so that the eccentric roller can be adjusted by rotating with the connecting rod inside the movable block. Under the action of the lower connecting rod and the second hydraulic rod, the movable block makes the eccentric roller adjust according to the waist position of different people, so as to meet the waist support of people with different waist positions. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a car seat back frame with a lumbar support adjustment linkage assembly according to the present invention. Figure 2 This is a schematic diagram of the adjustment component structure of an automotive seat back frame with a lumbar support adjustment linkage assembly according to the present invention. Figure 3 This is a schematic diagram of the lifting component structure of a car seat back frame with a lumbar support adjustment linkage assembly according to the present invention.

[0016] In the diagram: 1. Backrest frame; 2. Inner frame; 3. Adjustment assembly; 301. Eccentric roller; 302. Connecting rod; 303. Connecting ring; 304. Adjusting rod; 305. Hydraulic rod one; 306. Long limit plate; 4. Seat frame; 5. Head and neck support; 6. Moving block; 7. Short limit plate; 8. Lifting assembly; 801. Lower connecting rod; 802. Hydraulic rod two; 9. Crossbar. Detailed Implementation

[0017] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0018] like Figure 1 and Figure 2As shown in the figure, an automobile seat backrest framework provided with a lumbar support adjusting link assembly comprises a backrest frame 1 and an adjusting assembly 3. An inner connecting frame 2 is mounted at the top of the inner side of the backrest frame 1, the adjusting assembly 3 for adjusting a lumbar support adjusting link is arranged at the lower end of the inner connecting frame 2, and the adjusting assembly 3 comprises an eccentric roller 301, a link 302, a connecting ring 303, an adjusting rod 304, a first hydraulic rod 305 and a long limiting plate 306. The outer parts of two ends of the eccentric roller 301 are provided with the link 302, the eccentric roller 301 rotates to adjust the supporting convexity for adjusting the position of the seat lumbar support, the end part of the link 302 is connected with the connecting ring 303, two sets of the link 302 and the connecting ring 303 are symmetrically arranged about the center line of the eccentric roller 301, rod bodies at two ends of the link 302 and the eccentric roller 301 are fixedly connected, the link 302 drives the eccentric roller 301 to rotate along with the lifting of the adjusting rod 304, the adjusting rod 304 is arranged inside the connecting ring 303, the connecting ring 303 and the adjusting rod 304 are in sleeved connection, the upper end of the middle part of the adjusting rod 304 is provided with the first hydraulic rod 305, the output end of the first hydraulic rod 305 is provided with the long limiting plate 306, the long limiting plate 306 enables the adjusting rod 304 to move directionally under the driving of the first hydraulic rod 305, the outer side of the lower end of the backrest frame 1 is provided with a seat frame 4 through a rotating shaft, and the upper end of the backrest frame 1 is provided with a head and neck support 5.

[0019] As Figure 3 shown, two ends of the eccentric roller 301 are movably provided with moving blocks 6, the moving blocks 6 are movably connected with rod bodies at two ends of the eccentric roller 301, so that the eccentric roller 301 can be adjusted along with the rotation of the link 302 on the inner side of the moving blocks 6, the outer side of each moving block 6 is provided with a short limiting plate 7, the moving blocks 6 and the short limiting plates 7 are distributed at intervals, the lower end of each moving block 6 is provided with a height-adjustable lifting assembly 8, each lifting assembly 8 comprises a lower connecting rod 801 and a second hydraulic rod 802, the middle part of the lower end of the lower connecting rod 801 is provided with the second hydraulic rod 802, the lower connecting rod 801 is fixedly connected with the moving blocks 6, the moving blocks 6 enable the eccentric roller 301 to be adjusted according to the waist positions of different people under the action of the lower connecting rod 801 and the second hydraulic rod 802, so as to meet the waist support requirements of people with different waist positions, the lower connecting rod 801 is in a shape of a Chinese character "匚", the fixed end of the second hydraulic rod 802 is provided with a cross rod 9, and the cross rod 9 is in a shape of a Chinese character "口".

[0020] In summary, for this automobile seat backrest framework provided with the lumbar support adjusting link assembly, first according to Figures 1-3The structure shown depicts an eccentric roller 301 serving as a lumbar support for a car seat. During adjustment, the hydraulic rod 305 extends, causing the adjusting rod 304 to move downwards. This downward movement pulls the connecting ring 303 and the connecting rod 302, rotating the rods at both ends of the eccentric roller 301. The distance between the surface of the eccentric roller 301 and the center of rotation is adjusted to regulate the lumbar support's convexity. Smooth adjustment of the eccentric roller 301 during adjustment provides good lumbar support for the user. During adjustment, the length limit plate 306 causes the adjusting rod 304 to move directionally under the drive of the hydraulic rod 305. Based on the different lumbar positions of users of different heights, the hydraulic rod 802 is controlled to cause the lower connecting rod 801 to move the moving block 6 and the eccentric roller 301 to adjust their height, providing lumbar support for people with different lumbar positions. The operation is simple and suitable for various user groups.

[0021] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A car seat backrest frame with a lumbar support adjustment linkage assembly, comprising a backrest frame (1) and an adjustment assembly (3), characterized in that, An inner connecting frame (2) is mounted on the top of the inner side of the backrest frame (1), the adjustment assembly (3) for adjusting the lumbar support adjustment link is arranged at the lower end of the inner connecting frame (2), and the adjustment assembly (3) comprises an eccentric roller (301), a link (302), a connecting ring (303), an adjustment rod (304), a first hydraulic rod (305) and a long limit plate (306). The outer parts of both ends of the eccentric roller (301) are mounted with the link (302), the end of the link (302) is connected with the connecting ring (303), the inside of the connecting ring (303) is provided with the adjustment rod (304), the upper end of the middle part of the adjustment rod (304) is mounted with the first hydraulic rod (305), and the output end of the first hydraulic rod (305) is mounted with the long limit plate (306).

2. The car seat back frame with a lumbar support adjustment linkage assembly according to claim 1, characterized in that, The link (302) and the connecting ring (303) are arranged in two groups symmetrically about the center line of the eccentric roller (301), and the connecting ring (303) and the adjustment rod (304) are in sleeved connection.

3. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 1, characterized in that, The outer side of the lower end of the backrest frame (1) is mounted with a seat frame (4) through a rotating shaft, and the upper end of the backrest frame (1) is mounted with a head and neck support (5).

4. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 1, characterized in that, Both ends of the eccentric roller (301) are movably mounted with moving blocks (6), and the outer side of each moving block (6) is provided with a short limit plate (7).

5. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 4, characterized in that, The moving blocks (6) and the short limit plates (7) are distributed at intervals, and the lower end of each moving block (6) is mounted with a lifting assembly (8) for height adjustment.

6. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 5, characterized in that, The lifting assembly (8) comprises a lower connecting rod (801) and a second hydraulic rod (802), and the middle part of the lower end of the lower connecting rod (801) is mounted with the second hydraulic rod (802).

7. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 6, characterized in that, The lower connecting rod (801) and the moving block (6) are in fixed connection, and the lower connecting rod (801) is in a C-shape.

8. A car seat back frame with a lumbar support adjustment linkage assembly according to claim 7, characterized in that, The fixed end of the second hydraulic rod (802) is mounted with a cross rod (9), and the cross rod (9) is in a square shape with a closed perimeter.

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